Experts in public health accepted this idea decades ago, but until now no one has been able to show that a woman's ability to read in itself improves her children's chances of survival.

几十年前，公共卫生专家就接受了这一观点。但到目前为止，还没有人能够证明女性的阅读能力本身就能提高孩子的生存几率。

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KEEPING mentally agile protects against dementia but until now no one has known exactly why.

保持思维敏捷可防止痴呆症，而迄今为止，没有人知到究竟是何原因。

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That is clear."Until now, Lee's face had shown no emotion.

VOA: special.2009.12.24

No one will be spared. Until now,nations have focused almost solely on ways to mitigate climate change by reducing greenhouse gases.

VOA: standard.2009.08.31

SecondMarket and Sharespost enable people to grab shares of companies like LinkedIn but up until now no company has gone public to prove that the prices trading on those platforms would stand up in public markets.

FORBES: Will LinkedIn's IPO Open The Floodgates?

Until now, no Slovak party has been willing to give the Hungarians what they want.

BBC: News | Europe | Co-operation key to long-term success

But until now, no company could cost-effectively produce large OLED screens because of constraints in factory processes.

WSJ: TV Makers Seek Fatter Profits in Thinner Sets